Definitions of secured transaction
a loan or a credit transaction in which the lender gets a security interest in property owned by the borrower and may take possession and sell the property if the borrower does not make the loan payments
The bank only deals with secured transactions such as mortgages.
a secure method of paying for something that might otherwise be unsafe (eg paying for something using a computer or a mobile phone is sometimes seen as unsafe unless extra security precautions are taken)
There is also an ultrasonic fingerprint sensor which will enhance the security levels for making a secured transaction through mobiles.